What is the square root of pie
2 answers:
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Answer:
Step-by-step explanation:
Solving (a): The cost function.
Given
--- cost of saxophone
per hour
The cost function is: sum of the cost of the saxophone and the extra cost per hour.
If an hour costs 8.75, then x hours will cost 8.75x
So, the cost function is:
Solving (b): The revenue function
Given
per hour
The revenue function is the product of the unit charge by the number of hours.
If in an hour, she charges $34.00, then in x hours, she will cost 34x
So, the revenue function is:
Solving (c): The profit function
This is the difference between the cost function and the revenue function
i.e.
So, we have:
Solving (d): The break even hours.
To do this, we simply equate the cost function and the revenue function, then solve for x
i.e.
Collect like terms
Solve for x